Table 100-1. Classification of Vulvar Atypias

Pre-1985 classification

Hyperplastic dystrophy

    Without atypia

    With atypia (mild, moderate, severe)

Lichen sclerosus

Mixed dystrophy

    Without atypia

    With atypia

Current classification

Intraepithelial atypias

    Mild dysplasia (VIN I)

    Moderate dysplasia (VIN II)

    Severe dysplasia—CIS (VIN III)

Lichen sclerosus

Miscellaneous

CIS = carcinoma in situ; VIN = vulvar intraepithelial neoplasia.